/*
 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
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 */
package com.i360day.invoker;

import com.i360day.invoker.codes.encoder.Encoder;
import com.i360day.invoker.socket.handler.MessageHandlerListener;
import com.i360day.invoker.support.RemoteInvocation;
import com.i360day.invoker.support.RemoteInvocationFactory;
import com.i360day.invoker.support.RemoteInvocationResult;
import com.i360day.invoker.support.RemoteInvocationSerializingExporter;
import jakarta.websocket.Session;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.lang.reflect.Type;

/**
 * @author liju.z
 * @date 2024/4/3 21:43
 */
public class WebSocketHttpInvokerServer extends RemoteInvocationSerializingExporter implements MessageHandlerListener {
    private final Logger logger = LoggerFactory.getLogger(WebSocketHttpInvokerServer.class);
    private final RemoteInvocationFactory remoteInvocationFactory;
    private final Encoder encoder;

    public WebSocketHttpInvokerServer(RemoteInvocationFactory remoteInvocationFactory, Encoder encoder) {
        this.remoteInvocationFactory = remoteInvocationFactory;
        this.encoder = encoder;
    }

    @Override
    public byte[] onMessage(Session session, byte[] message) {
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        try {
            //analysis
            ObjectInputStream objectInputStream = createObjectInputStream(new ByteArrayInputStream(message));
            RemoteInvocation invocation = remoteInvocationFactory.doReadRemoteInvocation(objectInputStream);
            Type returnType = invocation.getReturnType(getService());

            //invoke
            RemoteInvocationResult result = invokeAndCreateResult(invocation, getProxy());
            encoder.writeRemoteInvocationResult(outputStream, returnType == null ? Object.class : returnType, result);
        } catch (Exception ex) {

        }
        return outputStream.toByteArray();
    }
}
